Chain length recognition: Core-shell supramolecular assembly from oppositely charged block copolymers
Chain length recognition: Core-shell supramolecular assembly from oppositely charged block copolymers
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DOI：
10.1126/science.283.5398.65
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发表时间：
1999-01-01
期刊：
影响因子：
56.9
通讯作者：
Kataoka, K
中科院分区：
文献类型：
--
作者：
Harada, A;Kataoka, K
基于长度的分子识别被发现发生在带相反电荷的柔性和随机卷曲的嵌段共聚物对在水环境中。即使在具有不同嵌段长度的混合物中，也仅形成具有相同嵌段长度的聚阴离子和聚阳离子的匹配对。这些组件的充电段匹配的链长，然后形成较大的核壳型超分子组件，由于核和壳形成段之间的严格的相分离，具有非常窄的尺寸分布。
Molecular recognition based on length was found to occur between oppositely charged pairs of flexible and randomly coiled block copolymers in an aqueous milieu. Matched pairs with the same block lengths of polyanions and polycations exclusively formed even in mixtures with different block lengths. These assemblies of the charged segments with matched chain lengths then formed larger core-shell-type supramolecular assemblies with an extremely,narrow size distribution due to the strict phase separation between core- and shell-forming segments.